ferules

n.

教鞭，戒尺( ferule的名词复数 )；

1. The teacher often beat him with a ferule when he was young.
   小时候他没少被老师用戒尺打。
2. The teacher strikes the table with his ferule to quiet the students.
   老师用戒方敲着桌子喊着让同学们安静。

Connecteur de ferules optiques
Clinical Observation of Ferules Acid Sodium treated Acute Viral Myocarditis
标准横型费曼规则的FevnRules推导
Santa Fe Rules
Santa Fe rules. WSEEA:1
Santa Fe rules : a novel
Fiber's new frontier: Small-form-factor connectors
Technological preparation of sugar beet pulp for its utilization in functional food processing
Advanced Research of Optical Fiber Board
SC形光コネクタ用プラスチックフェルールの信頼性